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A new high-efficiency and high-power bilateral buck and boost chopper circuit for the electric-vehicle drive application is presented. The operation principle of snubber-assisted zero-voltage and zero-current transition (SAZZ) topology was applied, and a new SAZZ bilateral buck-boost chopper circuit (SAZZ-1) was created by combining two basic SAZZ circuit types. A 50-kHz 25-kW SAZZ-1 was fabricated...
A new high efficiency and high power bilateral boost and buck chopper circuit for the electric vehicle (EV) drive application is presented. The operation principle of SAZZ (snubber assisted zero voltage and zero current transition) topology was applied and a new SAZZ bilateral buck-boost chopper circuit (SAZZ-1) was created by combining two basic SAZZ circuit types. A 50 kHz-25 kW SAZZ-1 was fabricated...
A new soft switching chopper SAZZ(snubber assisted zero voltage and zero current transition) is extended to a bilateral converter for FCEV. The SAZZ topology has the advantages in (1) the turn-on loss is theoretically zero, (2) the turn-off loss is reduced by the snubber, (3) the number of the components is reduced. The experimental results with 8 kW output at 100 kHz switching frequency is presented...
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